CN1906967A - Electroacoustic transducer and electronic apparatus using the same - Google Patents
Electroacoustic transducer and electronic apparatus using the same Download PDFInfo
- Publication number
- CN1906967A CN1906967A CNA2005800014520A CN200580001452A CN1906967A CN 1906967 A CN1906967 A CN 1906967A CN A2005800014520 A CNA2005800014520 A CN A2005800014520A CN 200580001452 A CN200580001452 A CN 200580001452A CN 1906967 A CN1906967 A CN 1906967A
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- China
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- mentioned
- joint
- magnetic circuit
- stopping means
- voice coil
- Prior art date
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- 230000002441 reversible effect Effects 0.000 claims abstract description 17
- 239000007769 metal material Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 28
- 229920001971 elastomer Polymers 0.000 claims description 21
- 239000000806 elastomer Substances 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 10
- 239000005060 rubber Substances 0.000 claims description 9
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 8
- 239000011496 polyurethane foam Substances 0.000 claims description 8
- 239000011368 organic material Substances 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 230000006641 stabilisation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004954 Polyphthalamide Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- IUYOGGFTLHZHEG-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Cu] IUYOGGFTLHZHEG-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920006375 polyphtalamide Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Telephone Set Structure (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides an electroacoustic transducer, wherein a stopper of a joint is made of an elastic body having high impact resistance and excellent restorability, and the stopper is combined with a magnetic circuit made of a metal material having high impact resistance, such as a bracket or a lower plate. The limiting device can limit the joint within the reversible limit value of the spring pressure, so that the reliability can be improved.
Description
Technical field
The present invention relates to be used in the electric acoustic converter of various sound machines or information communication machine and use its mobile phone or e-machine such as game machine.
Background technology
Utilize Fig. 8-13 that existing electric acoustic converter (to call converter in the following text) is described.Fig. 8-10 is the profile of converter, uses as the loud speaker or the receiver that are equipped on e-machines such as mobile phone.As shown in Figure 8, magnet 1 is formed the magnetic circuit 4 of internal magnetic type by upper board 2 and support 3 clampings.The support 3 of magnetic circuit 4 is pressed in the framework 6 that resin makes and comes combination by bonding.Oscillating plate 7 is adhered to the edge part of framework 6.The voice coil loudspeaker voice coil 8 that is used to drive oscillating plate 7 embeds in the magnetic gap 5 of magnetic circuit 4 when being incorporated into oscillating plate 7.
The lead of voice coil loudspeaker voice coil 8 is incorporated on the end of joint 10 by solder.Framework 6 is fixed the part of joint 10 by mold pressing.Then, the about middle body warpage with joint 10 is that two foldings are not so that joint 10 can exceed the overall dimension and outside the giving prominence to of framework 6.The other end of joint 10 constitutes the feeder ear to system's one side.At this, joint 10 will be by having a sheet metal plate bending machining of conductivity, become the spring pressure that utilizes this metallic plate and the contacted structure of power supply of system side.And then, in the bending that makes this metallic plate does not exceed the scope of reversible boundary value of metal material, by with the top of the sheet metal plate of joint 10 to the inside bending machining constitute stopping means 9, the regulation bending range.
The profile of the state of joint 10 shown in Fig. 9 and Figure 10 presentation graphs 8.The state of supposing joint shown in Fig. 8 10 is a top dead centre, and Fig. 9 is exactly the state that joint 10 arrives lower dead center so.Figure 10 applies excessive power once again for the state that the joint 10 by Fig. 9 arrives lower dead center, stopping means 9 distortion and the state that damaged by pressure.
Figure 11 and Figure 12 are for being equipped on above-mentioned converter the profile of the state on the e-machine such as mobile phone.Figure 11 represents that joint 10 is bent to a certain degree, gives the state of the suitable spring pressure of the power supply of device one side.Figure 12 is because external cause such as the fallen impact of mobile phone, and joint 10 is pressed to the power supply of device one side and is out of shape, and arrives after bottom dead center and then be applied in excessive pressure, stopping means 9 distortion and the state that damaged by pressure.In this case, the reversible boundary value that surpasses metal material owing to the bend of stopping means 9 or joint 10 is out of shape, in case suffer such impact, also can not return to original state even removed impressed pressure.
And the converter with this spline structure is disclosed in the spy and opens on the 2003-37890 communique.
Use user's the using method of the e-machines such as mobile phone of above-mentioned converter to vary, probably cause owing to barbarous and the fault that takes place such as use, fall.For this reason, market is day by day strong for the requirement that improves reliability.Therefore, the reliability that improves the converter be equipped on e-machine is absolutely necessary for the reliability that improves these e-machines.
As the loud speaker or the receiver of existing converter, make the metal terminal generation spring pressure of joint 10 and contact with the power supply of system one side.But, when being installed on these loud speakers on the e-machine, to set too greatly if size is gone in the signature of loud speaker, stopping means 9 distortion of joint 10 can appear making, exceed the situation of reversible boundary value of spring pressure of the metal terminal of joint 10.And then, if e-machine such as these mobile phones is fallen, can occur because the stopping means 9 of excessive impulsive force joint 10 is damaged by pressure, exceed the situation of reversible boundary value of spring pressure of the metal terminal of joint 10.Though this is to have spring pressure owing to stopping means 9 also is made of the metal terminal of same material, stopping means 9 has also exceeded the reversible boundary value of spring pressure, thereby permanent deformation.In case such situation takes place, because the spring pressure of joint 10 and stopping means 9 reduces, becomes unstable with the contacting of power supply of e-machine one side.Consequently occurred e-machine applied and impacted or come in contact during vibration badly, caused the problem of signal interruption.This problem not only results from and is being formed with on the joint 10 on the e-machine of stopping means 9, also results from as shown in figure 13 when the injection moulding of resin framework, on the e-machine by the one-body molded stopping means 11 of resin.This e-machine is when causing resin stopping means 11 destroyed, owing to the reversible boundary value of the spring pressure of the metal terminal that exceeds joint 10 produces the problems referred to above because of impact.
Summary of the invention
Electric acoustic converter of the present invention has magnetic circuit, framework, oscillating plate, voice coil loudspeaker voice coil, joint and stopping means.Framework combines with magnetic circuit.Oscillating plate is incorporated into the edge part of framework.Voice coil loudspeaker voice coil is with when oscillating plate combines, and its part is disposed in the magnetic gap of magnetic circuit.Joint is made of the metal with springiness and conductivity, is electrically connected with voice coil loudspeaker voice coil.
Stopping means is made of elastomer that is located at the magnetic circuit rear side or rigid body.The bending that stopping means will constitute the metallic plate of joint is limited in the reversible boundary value of metal material.Like this, can not produce the distortion or the destruction of stopping means self, can play the effect that prevents joint distortion.
And, the invention provides the e-machine that carries electric acoustic converter.
Description of drawings
Fig. 1 represents the profile of the loud speaker of one embodiment of the invention;
Fig. 2 represents the profile of the loud speaker of one embodiment of the invention;
Fig. 3 represents the stereogram of the loud speaker of one embodiment of the invention;
Fig. 4 represents the profile of the loud speaker of one embodiment of the invention;
Fig. 5 represents the profile of the loud speaker of one embodiment of the invention;
Fig. 6 represents the profile at main position of the e-machine of one embodiment of the invention;
Fig. 7 represents the profile at main position of the e-machine of one embodiment of the invention;
Fig. 8 represents the profile of existing loud speaker;
Fig. 9 represents the profile of existing loud speaker;
Figure 10 represents the profile of existing loud speaker;
Figure 11 represents the profile at the main position of existing e-machine;
Figure 12 represents the profile at the main position of existing e-machine;
Figure 13 represents the profile of existing loud speaker.
Description of reference numerals
21,21A magnet 22,22A upper board
23 support 23A lower panel
24 magnetic circuits, 25 magnetic gaps
26 frameworks, 27 oscillating plates
28 voice coil loudspeaker voice coils 29,29A stopping means
29B elastomer (rubber) 29C elastomer (polyurethane foam)
30 joints, 35 loud speakers
40 circuit, 60 display modules
70 external shells, 80 mobile phones
Embodiment
Converter of the present invention seek stopping means reinforcement so that the bending of metallic plate rest within the reversible boundary value of metal material.That is, constitute stopping means by the strong material of anti-impact force.As the material of stopping means, strong by anti-impact force, elastomer or rigid body with good recuperability constitute, and this stopping means is located at the support of the magnetic circuit that is formed by the strong metal material of anti-impact force or the rear side of lower panel.By this structure, owing to being made of elastomer or rigid body, stopping means has very strong restorability, and owing to the rear side that is located to the magnetic circuit of metal material has strong resistance to impact.The distortion or the destruction of stopping means self consequently can not be taken place, and can play the effect that prevents joint distortion.Promptly, in the time will being installed on the device as the loud speaker of converter one example, even owing to size is gone in the signature of loud speaker set significantly, or e-machine such as mobile phone is fallen and butt joint applies excessive impulsive force, situation such as the stopping means distortion can not take place yet or damaged by pressure.Consequently, do not have the situation of the reversible boundary value that exceeds the metal material that constitutes joint, because the spring pressure of joint can not reduce, joint can keep stronger spring pressure always.Like this, the contact stabilization of the power supply of joint and e-machine, even when e-machine being applied impact or vibration, bad owing to not coming in contact, signal can not interrupt, thereby realizes stabilisation.Therefore, the reliability of the e-machines such as mobile phone that carry converter of the present invention is improved.
Below, utilize accompanying drawing that embodiments of the invention are described in detail.In addition, accompanying drawing is a schematic diagram, and does not correctly represent each position relation dimensionally.
In addition, the floor space of loud speaker of the present invention is as long as can set arbitrarily within the shape of the support of the magnetic circuit of being installed or lower panel.And,, generally be set at the application point of the spring pressure of joint and equate substantially as for the height of stopping means.
Utilize Fig. 1-3 that loud speaker as the converter of one embodiment of the invention is described.And, in embodiment 1, be that rectangular narrow speaker describes, but the present invention is not limited thereto at profile.
Fig. 1 is the profile of the loud speaker of embodiment 1.Fig. 2 is the joint of loud speaker shown in Fig. 1 arrives the state of lower dead center by the protection of stopping means a profile.The stereogram that Fig. 3 sees from other direction for loud speaker shown in Fig. 1.As shown in Figure 1-Figure 3, the magnet 21 that is magnetized is made of the magnetic circuit 24 of internal magnetic type upper board 22 and support 23 clampings.Making magnetic circuit 24 be pressed into support 23 contacted while mold pressings with magnetic circuit 24 has in the framework 26 that the resin of the part of joint 30 makes, and passes through adhesive bond.
Next, at the bonding oscillating plate 27 of the edge part of framework 26, combine with this oscillating plate 27 and the voice coil loudspeaker voice coil 28 that is used to make its driving to embed the mode combination of magnetic gap 25.Thereafter, the lead of this voice coil loudspeaker voice coil 28 combines by solder with an end of joint 30.
At last, the about central portion with joint 30 is flexed into two foldings so that it can not exceed the overall dimension of framework 26 and give prominence to the outside.The other end of joint 30 constitutes the power supply terminal to system's one side.At this,, be combined with the stopping means 29 that elastomer or rigid body constitute in the back side portion of the support 23 of magnetic circuit 24 for the bending of the metallic plate that makes joint 30 is limited in the reversible boundary value of metal material.The stopping means that should be made of elastomer 29 is made of macromolecular material.As the example of this macromolecular material, can enumerate at least a material of from the group that rubber, elastomeric material (エ ラ ス ト マ one), polyurethane foam and Foamex constitute, selecting.Use the reason of these materials to be, when absorbing excessive power that drop impact etc. produced, protection loud speaker, owing to have bigger recuperability, can stand drop impact etc. repeatedly.And this macromolecular material can also can be inorganic compound for organic compound.In addition, because above-mentioned macromolecular material also is an insulating material, see it also is preferred from the following aspect.Its reason is, though as joint 30 and stopping means 29 direct contacting structure does not take place in common the use, even joint 30 distortion, two-terminal are all contacted applying the excessive power that produces owing to drop impact etc. with stopping means 29, also can not be short-circuited.
In addition, stopping means 29 also can be made of rigid body.As the example of this rigid body, can enumerate organic material or nonmagnetic substance.Be preferred for the material of resin framework as this organic material.Specifically can enumerate poly-phthalamide (Port リ Off Le ア ミ De), PBT, PS, ABS, PP etc.As nonmagnetic material, preferred aluminium, copper, stainless steel, titanium etc.And though enumerate the example of stopping means 29 as monomer, use in addition also can combine above-mentioned elastomer with rigid body.And the bonding agent that combines by adapting with employed material of the support of stopping means 29 and magnetic circuit or lower panel carries out.
By said structure, when the e-machine of loud speaker is installed, joint 30 is bent to a certain degree, can keep the state that applies suitable spring pressure to the power supply of device.So when even brute force is pushed loud speaker and installed, because stopping means 29 contacts, joint 30 can not be moved further.
In addition, even because of carelessness e-machines such as mobile phone are being fallen, when butt joint 30 applies excessive impulsive force, because the effect of stopping means 29, can not exceed the distortion of reversible boundary value of metal material and the situation of damaging by pressure.Therefore, do not have the situation of reversible boundary value of the spring pressure of the metal terminal that exceeds joint 30, also do not have the situation that the spring pressure of joint 30 reduces, joint 30 can keep stronger spring pressure always.Consequently,,, can not come in contact badly yet, not have the situation thereby the stabilisation of signal interruption even when e-machine being applied impact, vibration with contacting of the power supply of e-machine in conjunction with stabilisation.Therefore, can seek to improve the reliability of e-machines such as mobile phone.In addition, as the material of metallic plate, preferably has the metal material of springiness and conductivity.Can enumerate phosphor bronze or copper-titanium alloy etc. as its example.And the reversible boundary value of metal material is represented by the intensity or the number of times of the shape of the angle of bend of metallic plate or bend and then the load that applied.
Fig. 4 represents the profile of the loud speaker of one embodiment of the present of invention.Difference with embodiment 1 only is described.As shown in Figure 4, the magnet 21A that is magnetized is constituted the magnetic circuit 24A of external magnetic type by upper board 22A and lower panel 23A clamping.In addition, the back side at the lower panel 23A of the magnetic circuit 24A of external magnetic type is formed with the stopping means 29 that is made of elastomer or rigid body, the bending range of limiting joint 30.According to this structure, be not only electric acoustic converter with internal magnetic type magnetic structure, also can implement to prevent the countermeasure of joint 30 permanent deformations for electric acoustic converter with external magnetic type magnetic structure.Consequently can seek the raising of the reliability of e-machines such as mobile phone.As stopping means 29 employed examples of material, can use the material of in embodiment 1, enumerating.
Utilize Fig. 5 that embodiment 3 is described.Fig. 5 represents the profile of the loud speaker of one embodiment of the present of invention, is applicable to that with embodiment 1 the same expression profile is the example of rectangular slender type loud speaker.Difference with embodiment 1 only is described.
As shown in Figure 5, stopping means 29A constitutes the limit flexion scope by the laminated body that the different two or more material of spring rate forms at least.
Stopping means 29A directly is combined in the back side of the support 23 of magnetic circuit 24 for spring rate in the macromolecular material is low, as to be hard material rubber 29B uses bonding agent.Then spring rate polyurethane foam 29C high, that be soft material being used bonding agent directly to be combined in rubber 29B goes up and constitutes.By this structure, stopping means 29A has following effect.That is, the impulsive force when being fallen by the polyurethane foam bulk absorption as soft material simultaneously by the function of finishing stopping means as the rubber of hard material, can prevent the distortion of joint 30.In other words, because stopping means 29A can realize absorbing impulsive force and these the two kinds of functions of permanent deformation that prevent joint 30, can further seek to improve the reliability of e-machines such as mobile phone.And though claim that rubber 29B is a hard material, that is owing to the spring rate of comparing with polyurethane foam 29C is lower.In the present embodiment, enumerated the laminated body that constitutes by the different two or more materials of spring rate at least as the example of stopping means 29.As its concrete example,, use rubber 29B and polyurethane foam 29C as the example of two kinds of different macromolecular materials of spring rate in the elastomer.But, be not limited to this situation.For example, also can implement as laminated body rigid body and elastomeric combination.
And rubber 29B and the binding sequence of polyurethane foam 29C at the back side of magnetic circuit 24 also are fine on the contrary.
Fig. 6 and Fig. 7 represent the profile as the major part of the mobile phone of the e-machine of one embodiment of the invention, use its explanation embodiment 4.Mobile phone 80 constitutes and is equipped with loud speaker 35.Though find out obviously that in the drawings loud speaker 35 has the internal magnetic type magnetic circuit, also can be the external magnetic type magnetic circuit.
As shown in Figure 6, the major part of mobile phone 80 constitutes the inside that loud speaker 35, circuit 40 and display module (liquid crystal board etc.) 60 are equipped on external shell 70.And, make the joint 30 of loud speaker 35 contact power supply by applying spring pressure, thereby make loud speaker 35 starts with circuit 40.
Because this structure, when being installed to loud speaker 35 on the mobile phone 80, even set significantly because of size is gone in the signature of loud speaker 35, or mobile phone 80 is fallen and butt joint 30 applies excessive impulsive force, because joint 30 permanent deformations can not take place yet or situation by pressure such as be damaged in the effect of stopping means 29.In other words, owing to can not exceed the reversible boundary value of spring pressure of the metal terminal of joint 30, the spring pressure of joint 30 can not reduce, and joint 30 can keep stronger spring pressure always.Consequently the power supply of joint 30 and the electronic loop 40 of mobile phone 80 contacts in conjunction with stabilisation.Its result, even when mobile phone 80 being applied impact or vibration, bad owing to not coming in contact, signal can not interrupt realizing stabilisation.Like this, can seek the raising of the reliability or the quality of e-machines such as mobile phone.And employed loud speaker 29 is made of the material of putting down in writing in the various embodiments described above in the present embodiment.
Absorb the impact that causes by falling etc. because stopping means of the present invention contacts with face, can effectively prevent the permanent deformation of joint etc.
And, the magnet of the preferred high energy product of magnet that the present invention uses.Can enumerate neodymium as its example is magnetite, samarium-cobalt magnetite etc.
The possibility that is used for industry
Electric acoustic converter according to the present invention goes for the shadow that needs improve reliability or quality Picture sound machine or the e-machines such as information communication machine, game machine.
Claims (9)
1, a kind of electric acoustic converter is characterized by, and has: magnetic circuit; The framework that combines with above-mentioned magnetic circuit; The oscillating plate that combines with the edge part of above-mentioned framework; Combine with above-mentioned oscillating plate, simultaneously its part is configured in the voice coil loudspeaker voice coil in the magnetic gap of above-mentioned magnetic circuit; The joint that constitutes, is electrically connected by metallic plate with above-mentioned voice coil loudspeaker voice coil with springiness and conductivity; The rear side that is arranged on above-mentioned magnetic circuit is limited in the reversible boundary value of metal material with interior stopping means with the bending of the above-mentioned metallic plate that will constitute above-mentioned joint.
2, electric acoustic converter according to claim 1 is characterized by, and above-mentioned stopping means is arranged on the back side of the support of above-mentioned magnetic circuit.
3, electric acoustic converter according to claim 1 is characterized by, and above-mentioned stopping means is arranged on the back side of the lower panel of above-mentioned magnetic circuit.
4, electric acoustic converter according to claim 1 is characterized by, and above-mentioned stopping means is made of elastomer or rigid body.
5, electric acoustic converter according to claim 4 is characterized by, and above-mentioned elastomer is made of macromolecular material.
6, electric acoustic converter according to claim 5 is characterized by, at least a material of above-mentioned macromolecular material for selecting the group that constitutes from rubber, elastomeric material, polyurethane foam and Foamex.
7, electric acoustic converter according to claim 4 is characterized by, and above-mentioned rigid body is organic material or nonmagnetic material.
8, electric acoustic converter according to claim 1 is characterized by, the laminated body of above-mentioned stopping means for being made of the material of different two or more of spring rate at least.
9, a kind of e-machine is characterized by, and is equipped with electric acoustic converter, and this electric acoustic converter has: magnetic circuit; The framework that combines with above-mentioned magnetic circuit; The oscillating plate that combines with the edge part of above-mentioned framework; Combine with above-mentioned oscillating plate, simultaneously its part is configured in the voice coil loudspeaker voice coil in the magnetic gap of above-mentioned magnetic circuit; The joint that constitutes, is electrically connected by metallic plate with above-mentioned voice coil loudspeaker voice coil with springiness and conductivity; The rear side that is arranged on above-mentioned magnetic circuit is limited in the reversible boundary value of metal material with interior stopping means with the bending of the above-mentioned metallic plate that will constitute above-mentioned joint.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP133117/2004 | 2004-04-28 | ||
| JP2004133117A JP4383953B2 (en) | 2004-04-28 | 2004-04-28 | Electroacoustic transducer and electronic device using the same |
| PCT/JP2005/008448 WO2005107317A1 (en) | 2004-04-28 | 2005-04-27 | Electric acoustic converter and electronic device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1906967A true CN1906967A (en) | 2007-01-31 |
| CN1906967B CN1906967B (en) | 2012-02-29 |
Family
ID=35242070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800014520A Expired - Fee Related CN1906967B (en) | 2004-04-28 | 2005-04-27 | Electroacoustic transducer and electronic apparatus using the same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7362877B2 (en) |
| EP (1) | EP1742503A4 (en) |
| JP (1) | JP4383953B2 (en) |
| CN (1) | CN1906967B (en) |
| WO (1) | WO2005107317A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674515B (en) * | 2009-09-15 | 2013-01-02 | 歌尔声学股份有限公司 | Miniature moving ring type electroacoustic transducer and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005318227A (en) | 2004-04-28 | 2005-11-10 | Matsushita Electric Ind Co Ltd | Electroacoustic transducer and electronic device using the same |
| US7527516B2 (en) | 2004-05-20 | 2009-05-05 | Panasonic Corporation | Portable electronic device |
| JP4196114B2 (en) * | 2004-07-01 | 2008-12-17 | パナソニック株式会社 | Electroacoustic transducer and electronic device using the same |
| JP5111937B2 (en) * | 2007-05-23 | 2013-01-09 | 京セラ株式会社 | Portable electronic devices |
| JP2009267907A (en) * | 2008-04-28 | 2009-11-12 | Panasonic Corp | Speaker |
| JP4997173B2 (en) * | 2008-05-13 | 2012-08-08 | ホシデン株式会社 | Electroacoustic transducer |
| US8452037B2 (en) | 2010-05-05 | 2013-05-28 | Apple Inc. | Speaker clip |
| KR101709532B1 (en) * | 2010-11-11 | 2017-02-24 | 엘지전자 주식회사 | Mobile terminal |
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| US9820033B2 (en) | 2012-09-28 | 2017-11-14 | Apple Inc. | Speaker assembly |
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-
2004
- 2004-04-28 JP JP2004133117A patent/JP4383953B2/en not_active Expired - Fee Related
-
2005
- 2005-04-27 US US10/578,790 patent/US7362877B2/en not_active Expired - Fee Related
- 2005-04-27 WO PCT/JP2005/008448 patent/WO2005107317A1/en not_active Application Discontinuation
- 2005-04-27 EP EP05738748A patent/EP1742503A4/en not_active Withdrawn
- 2005-04-27 CN CN2005800014520A patent/CN1906967B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101674515B (en) * | 2009-09-15 | 2013-01-02 | 歌尔声学股份有限公司 | Miniature moving ring type electroacoustic transducer and assembling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1742503A1 (en) | 2007-01-10 |
| CN1906967B (en) | 2012-02-29 |
| EP1742503A8 (en) | 2007-02-21 |
| WO2005107317A1 (en) | 2005-11-10 |
| US20070080412A1 (en) | 2007-04-12 |
| JP2005318228A (en) | 2005-11-10 |
| US7362877B2 (en) | 2008-04-22 |
| JP4383953B2 (en) | 2009-12-16 |
| EP1742503A4 (en) | 2009-01-28 |
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